Base | Representation |
---|---|
bin | 100011100010… |
… | …0010001100010 |
3 | 1022001111012000 |
4 | 1013010101202 |
5 | 14232122410 |
6 | 1503144430 |
7 | 314231040 |
oct | 107042142 |
9 | 38044160 |
10 | 18629730 |
11 | a574879 |
12 | 62a5116 |
13 | 3b23812 |
14 | 268d390 |
15 | 197edc0 |
hex | 11c4462 |
18629730 has 64 divisors (see below), whose sum is σ = 56782080. Its totient is φ = 4257792.
The previous prime is 18629717. The next prime is 18629749. The reversal of 18629730 is 3792681.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3039 + ... + 6818.
It is an arithmetic number, because the mean of its divisors is an integer number (887220).
Almost surely, 218629730 is an apocalyptic number.
18629730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
18629730 is an abundant number, since it is smaller than the sum of its proper divisors (38152350).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18629730 is a wasteful number, since it uses less digits than its factorization.
18629730 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9880 (or 9874 counting only the distinct ones).
The product of its (nonzero) digits is 18144, while the sum is 36.
The square root of 18629730 is about 4316.2170937060. The cubic root of 18629730 is about 265.0953970056.
The spelling of 18629730 in words is "eighteen million, six hundred twenty-nine thousand, seven hundred thirty".
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